Automatic hydraulic valve



Nov. 6, 1928. 1,690,165

V W. L. GILCHRIST AUTOMATI C HYDRAULI C VALVE Filed Aug. 28, 1926 2Sheets-Sheet l gwmntov Nov. 6, 1928.

W. L. GILCHRIST AUTOMATIC HYDRAULIC VALVE Filed Aug. 28, 1926 2Sheets-Sheet &

' easy. means for t adjustment and repair without the necessity PatentedNov. 6, 1928.

j UNITEDFSZ'IFA TE Sf PATENT OFFICE,

WILLIAM L. GILCHRIST, 0E ALBANY, oEEGon, AssIGNoE 'ro STANDARDSECURITIES 00.,

A conronerron .oE OREGON.

1 AUTOMATIC HYDRAULIC VALVE.

Application filed August 28, 1926. Serial No 132,222.

A further ob ect of my present invention consists in providing anautomatic valve that is noiseless in operation irrespective of theressure in the supply. line for the liquid to e assed therethrough.

still further object of my present invention consists in providing avalve that is adapted for use in toilet flushing tanks, and other placesof similar and kindred nature, wherein automatic means are required forthe control ofthe liquid entering the flushing tank. r 1

A still further object of my invention consists in providin a valvehaving simple and he removal of the valve for of removing the entirevalve structure from its place and position of use. 1

A still further object of my invention con sists' in providing anautomatic cushioning escapement within the valve chamber.

Additional objectsof my invention consist in providing simple means forthe cracking of the valve from its seat.

.Withthese and "ncidental objects in View, the invention consistsincertain novel features of construction and combination, the essentialelements of which are setforth in the'appended claims, and a preferredformof embodiment is hereinafter shown with reference to the drawingswhich accompany,

and forma part of this specification.

In thedrawingsz- V Fig. 1 is a side elevation, partially in section, ofone of my new and improved automatic hydraulic valvesbeing actuatedby'afloat ball and arm. s

,Figf2 is a fragmentary, side elevation, partially in section, of theactuating mechanisms for raising and lowering the valve, with theactuating mechanism, in its initial operating position,.for the raisingof the valve.

Fig. 3 is a side elevation, partially insection, illustrating the valvecompletely raised to permit the flow. of liquids therethrough.

Fig. 4 is a front elevation of a preferred form of embodiment of'thevalve casing. Fig-"'5 is a front elevation of the complete assembly ofthe preferred embodiment of the valve head. i

Fig. dis a fragmentary of the gasket for one of my new and improvedvalves. 2

Fig. 7 is a side elevation, partially in section, of another embodimentof one of my new and improved automatic hydraulic valves adapted to handmanipulation.

Like reference characters referto like parts throughout the severalviews.

' l is the tubular o'r cylindrical member of the valve, terminating onits lower end 2, for

v a threaded engagement with the supply line for supplying the materialsto be passed through the valve. -Disposed centrally of the cylindricalmember- 1 is an inlet pipe 3, adapted to the primary passage of theliquid from the source of supply (not here shown) and conductingthe sameto the valve casing 4. The valve casing 4 has apassageway orchamberficonnecting with the supply lineand has an opening 6, passingthrough the valve seat 7 intothe outlet chamber 8. Within the valvecasing is avalve stem 9, having a head 10secured upon the upper endthereof, the valve stem 9 and the head being secured together by anysuitable fastening means, as by being circumferentially of the headwhich alsohas a disc 12 secured to the upper end thereof;

a gasket 13 is disposed onthe lower side of The collar 16, disposed uponthe valve stem 9, engages the under side of the gasket 13, a

cross-section view 'screwedtoget-her. A channel 11 is formedtightrelationship being maintainedbetween a the. valve head, the gasket18, andbetween the head and the stem by the threaded rela tionshipbetween the valve stem and the valve head.., A chamber 17 is formed inthe; upper end of the valve casing. andto permit -.of

stem 9, a plug 18, is provided which is threadedtothe casing. Thelimitof tolerance between the outerperiphery of disc 12 and the the removalof the head 10 from the. valveinner .surface'of the chamber17issuflicient only for the free movement of the disc lon-- gitudinally ofthespace formed at 17 WVhen' the head 10= is raised the passage ofliquid is permitted through the opening 6. The initial cracking, of thevalve, especially Where all high operating pressures are maintained isquite essential. To provide for an easy opening of the valve I haveprovided a canuned surface 19 within the stem 9. and the actuating lever20 has two rammed surfaces 21 and 22 formed upon the upper side thereofand is pivoted about; the journal support The primary engaging surface21 being close to the pivotal center 23 ol the operating lever greatlyincreases the mechanical advantage for the cracking of the valve fromits seat. A further movement of the lever 20 engages the surface 22 witha cumming surface 19 and rapidly raises the valve to its maximumopening. in which position it locked by the loching point 27, of thepawl 25, journaled about the supporting pin 26 engaging in the notch 24of the valve stem. The raising of the operating lever 20 to maximumheight, as illustrated in Fig 1, causes the lower caminiiig surface 28of the lever 20 to engage the cumming surface 2), thus lowering thev*alve to closed position. The locking lever is disengaged by the finger30 on the lever 20 engaging with the projection 31 or" the locking leverTo prevent a-water hammer being formed, by the closing of the valve, theliquid passes through the bypass 32 into the chamber 17 and the liquidtrapped within the chamber 17 must escape through the tolerancesprovided between the peripheral surface 33 of the valve head and thewall of the opening 3st through the valve casing. This permits positiveopening and closing of the valve wherein a period 0 1 time suilieient topermit the escape of the liquid trapped within the chamber 17 mustelapse, thus providing a valve for the purpose intended that. isabsolutely noiseless in its operation.

The liquid passing through the valve passes through outlet chamber 8into the passageway 35, disposed between the inner wall ol 1 and theouter wall 3, and passes to the point of use through openings 36. I

lVhere it is desired to use one ot my new and improved devices onfaucets and the like a levergi' is journaled within a suitable hearing38 as by the use of a ball 39, disposed upon the lever and engaging thebearing 38, and having an arm 41 passing through the body portion of thevalve casing and engaging the upper and lower surfaces of the slot 42,of the main body portion of the valve head.

The detail of construction herein referred to is illustrated in detailin Fig. 7, otherwise the operation of the valve is the same asheretofore described. A measured amount of liquid will be supplied wherethe valve is raised, the amount of liquid flowing depending upon thetime required for the escapement oi the liquid trapped within theehun'iber 17.

lVhile the form of mechanism herein shown and described is admirablyadapted to aw complish the objects primarily stated. it is not intendedto couline the in vcntion to the specific i'orm herein described, as itis susceptible of embodiment in various limited ways all coming withinthe scope of the claims which follow.

What I claim is:-

1. In a device of the class describeth a pair of concentric tubularmembers. a valve casing mounted on said tubular members. an inletchamber and an outlet. chamber t'm-n'ied in the casing and communicatingresqiectively with the inner and outer tubular numbers, a passagewaybetween the two chmnl'iors, the portion oi the casing surrounding theupper end of said passageway forming a valve seat; a valve. above saidpassageway adapted to engage said seat said valve having a stem providedwith a longitudinally disposed slot; a lever t'ulerumed to said casing,eugageable with the upper and lower walls of said slot for the purposeof raising and lowering said stem; a pawl rockably carried by saidcasing; said pawl adapted to engage said stem when in a raised position;and a finger carried by said lever adapted to engage said pawl torelease said stem therefrom when the lever is moved to a position forloweriu g the valve.

2. In a device of the class described, a valve casing, an inlet chamberand an outlet chamber formed therein, a passageway leading from theinlet chamber to the outlet chamber, the portion of the casingsurrounding the upper end of said passageway forming a valve seat; avalve head, above said passageway adapted to engage said seat; a stemfor said valve; a third chamber formed in said casing; a disc mounted onsaid valve head to form a plunger vertically shil'table in said lastmentioned chan'iber; means permitting retarded ingress and egress ot afluid between the inlet chamber and the last mentioned chamber; ai'ulcrumcd lever adapted to raise and lower said valve head and stem; apawl rockably carried by said casing adapted to support; said stem inraised position when the lever is in its lower position for raising thevalve head; and a finger on said lever adapted to release said pawl whensaid lever is raised for lowering the valve head.

3. In a device. of the class described, a valve casing, an inlet chamberand an outlet chamber formed therein, a passageway leading from theinlet chamber to the out-- let chamber, the portion of the casingsurrounding the upper end of said passageway forming a valve seat; avalve head above said passageway adapted to engage said seat; a. stemfor said valve, a cylindrical chamber formed in said casing; a discmounted on said valve head and vertically movable within rflitlcylindrical ebai'nber; a bypass formed through said valve head to affordcommunication between the inlet chamber and the cylindrical chamber whensaid head is in other than a lowered position; a fulcrumed lever adaptedto raise and lower said valve head and stem; means adapted to supportthe valve head and stem in an elevated position when the lever is in itslower position for raising the valve head; and means adapted todisengage said last mentioned means from said stem to permit said valvehead and stem to be moved to a'lowered position when said lever israised for lowering said stem.

4. Ina device of the class described, a valve casing, an inlet chamberand an outlet chamber formed therein, a passageway leading from theinlet chamber to the outlet chamher, the portion of the casingsurrounding the upper end of said passageway forming a valve seat; avalve head above said passageway adapted to engage said seat; a stem forsaid valve, a cylindrical chamber formed in said casing; a disc mountedon said valve head and vertically movable within'said cylindricalchamber; a bypass formed through with the'upper and lower walls of saidslot for the purpose of raising and lowering said stem; a pawl rockablymounted on said casing; said pawl adapted to engagesaid stem when in araised position; and a finger car ried by said lever adapted todisengage said pawl from said stem when the lever is position forlowering the valve. WILLIAM L. GILCHRIST.

moved to a

